A Low-noise Low-power MOSFET only Electrocardiogram Amplifier
محل انتشار: مجله سیستم های برق و سیگنال، دوره: 1، شماره: 2
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 544
فایل این مقاله در 6 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
این مقاله در بخشهای موضوعی زیر دسته بندی شده است:
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JESS-1-2_003
تاریخ نمایه سازی: 19 شهریور 1396
چکیده مقاله:
Electrocardiogram (ECG) signal is widely used in the diagnosis of heart diseases. Since the amplitude of this signal is very low, a high-gain low-noise amplifier with a high common mode rejection ratio (CMRR) is needed. In portable applications a battery provides the required power for the ECG device. Hence, ECG amplifiers should have low area and power consumption. In this paper, an instrumentation amplifier for ECG application is proposed in which MOSCAPs are used to reduce the circuit area. MOSCAPs are inherently nonlinear and a technique is presented to reduce the impact of this non-linearity. In ECG systems, a driven right-leg circuit is used to increase the CMRR of the amplifier. In this paper a class AB buffer is employed to implement this circuit. The simulation results show that the gain of the proposed amplifier is 46.18 dB and its input referred noise is 7.8µVrms over the frequency range of 0.3 Hz to 150 Hz. The total power consumption of the designed amplifier is 72nW. The amplifier CMRR is 96 dB and its total harmonic distortion (THD) is 0.68% (at 60Hz).
کلیدواژه ها:
نویسندگان
Maryam Ghamati
The authers are with the Departmant of Electrical Engineering, Ferdowsi University of Mashhad, Iran.
Mohammad Maymandi-Nejad
The authers are with the Departmant of Electrical Engineering, Ferdowsi University of Mashhad, Iran.